October 2016
Service and Repair Manual
Boom Components
Part No. 1269074
S-80 • S-85 • S-80X
47
4-6
Platform Leveling Master Cylinder
The master cylinder acts as a pump for the slave
cylinder. It is part of the closed loop hydraulic circuit
that keeps the platform level through the entire
range of boom motion. The master cylinder is
located inside the pivot end of the boom.
How to Remove the Platform
Leveling Master Cylinder
Note: When removing a hose assembly or fitting,
the O-ring (if equipped) on the fitting and/or hose
end must be replaced. All connections must be
torqued to specification during installation. Refer to
Specifications,
Hydraulic Hose and Fitting Torque
Specifications.
1
Raise the boom until the master cylinder
rod-end pivot pin is accessible.
2
Remove the turntable end cover to access the
master cylinder.
3
Tag, disconnect and plug the master cylinder
hydraulic hoses. Cap the fittings on the
cylinder.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
4
Remove the pin retaining fastener from the
master cylinder barrel-end pivot pin.
5
Place a rod through the barrel-end pivot pin
and twist to remove the pin.
6
Attach a lifting strap from an overhead crane to
the lug on the rod end of the master cylinder.
7
Remove the pin retaining fastener from the
rod-end pivot pin.
8
Place a rod through the rod-end pivot pin and
twist to remove the pin.
9
Remove the master cylinder from the machine.
Crushing hazard. The master
cylinder could become
unbalanced and fall if not
properly attached to the
overhead crane.
Summary of Contents for S-80
Page 16: ......
Page 76: ...Service and Repair Manual October 2016 Manifolds 60 S 80 S 85 S 80X Part No 1269074 ...
Page 86: ...Service and Repair Manual October 2016 Manifolds 70 S 80 S 85 S 80X Part No 1269074 ...
Page 144: ...Service and Repair Manual October 2016 128 Continental TME27 Engine Harness ...
Page 147: ...October 2016 Service and Repair Manual 131 S 80X Ground Control Box Wiring Diagram ...
Page 148: ...Service and Repair Manual October 2016 132 Deutz TD2 9 L4 Engine Harness ...
Page 151: ...October 2016 Service and Repair Manual 135 Perkins 404F 22T Engine Harness ...
Page 289: ...October 2016 Service and Repair Manual 273 Continental Options Schematic ...
Page 292: ...Service and Repair Manual October 2016 276 Deutz and Perkins Options Schematic ...
Page 293: ...October 2016 Service and Repair Manual 277 Platform Level Cutout CTE Option ...
Page 296: ...Service and Repair Manual October 2016 280 12 kW Hydraulic Generator Wiring Diagram ...
Page 297: ...October 2016 Service and Repair Manual 281 12 kW Hydraulic Generator Electrical Schematic ...
Page 300: ...Service and Repair Manual October 2016 284 Belt Driven Generator Option ...
Page 301: ...October 2016 Service and Repair Manual 285 Hydraulic Schematic 2WD Models ...
Page 305: ......